2023 Annual Program Report: 25 Years of RBV Sampling!

Common stonefly (Perlidae)

Connecticut is fortunate to be a water-rich state, home to over 7,772 miles of rivers and streams. One of the CT DEEP Monitoring and Assessment Program’s (MAP) primary tasks is to conduct water quality monitoring to evaluate the physical, chemical and biological conditions of all waters in the State as part of Clean Water Act (CWA) requirements. Given limited staff resources, this wealth of water resources presents a challenge to achieve this CWA goal. One way MAP has enhanced assessments is by utilizing citizen scientist data to work towards this goal.

In 1999, the MAP developed a citizen science program, called the Riffle Bioassessment by Volunteers (RBV) Program, where trained volunteers collect benthic macroinvertebrate data from wadeable streams. 2023 marked the 25th consecutive sampling year for RBV program data. Thank you all for your hard work over these past 25 years - we would not be here without you!



A Treasure Hunt for CT’s Healthiest Streams!

The CT DEEP Riffle Bioassessment by Volunteers or “RBV” Program is an annual fall ‘treasure hunt’ for Connecticut’s healthiest streams. CT DEEP uses the data collected by RBV volunteers to expand its inventory of excellent small, high gradient Connecticut streams that have excellent water quality – our “Healthy Streams” list.

RBV volunteers examine the water quality of local stream segments by studying the aquatic benthic macroinvertebrate community present in rocky or ‘riffle’ areas of these streams. If volunteers can find four or more pollution sensitive or ‘most wanted’ macroinvertebrates, CT DEEP can use this data to assess that stream as fully supporting water quality standards for aquatic life use – documenting it as one of CT’s healthiest streams!

Because it is a screening approach and not a more in-depth assessment methodology, RBV cannot provide a detailed water quality assessment, nor can it be used to identify low or impaired water quality.

Above: volunteers taking RBV samples in Wood Creek, Bethlehem. Photo courtesy of the Pomperaug River Watershed Coalition.

2023 Local RBV Programs & Leaders

Local RBV Programs ensure that the statewide RBV program is a success each year. Local RBV Coordinators put countless hours into organizing their programs, communicating with DEEP, recruiting and training volunteers, and more.

Local RBV Program Leaders
Washington Montessori School Tom Fahsbender
Vernon Conservation Commission Tom Oullette
Bolton Conservation Commission Rod Parlee & Peter Van Dine
Pomperaug River Watershed Coalition Carol Haskins
Salmon River Watershed Partnership Patricia Young
Eightmile River Wild & Scenic Watershed Patricia Young
Three Rivers Community College Diba Khan Bureau
Farmington River Watershed Association Heather Geist
Greenwich Inland Wetlands & Watercourses Agency Jennifer Urena
The Last Green Valley Jean Pillo
Trout Unlimited - Candlewood Valley Chapter Joe Hovious & Paul Shafer
East Lyme Commission for the Conservation of Natural Resources Penny Howell & Don Danila
Greenwich Country Day School Nikki Barratt

Thank you Jean!

Congratulations to Jean Pillo on your well-deserved retirement! Jean Pillo has been focusing on water quality issues since 2006, when she joined the National Heritage Corridor and began partnering with the Eastern Connecticut Conservation District. Jean’s work as The Last Green Valley Volunteer Water Quality Monitoring Coordinator has been integral to the success of the RBV program in Northeastern Connecticut. Thank you for all your hard work over these many years!




2023 Monitoring Results

The 2023 RBV monitoring program faced numerous challenges, including CT DEEP staffing changes, near-record breaking amounts of rainfall, and corresponding high flows. Despite less than ideal sampling conditions, the program continued to have a positive impact and contributed meaningful data to the Department of Energy and Environmental Protection.

RBV volunteers collected 59 vouchers from 55 unique locations on 53 different waterbodies. 30 (51%) of the 2023 monitoring vouchers had 4 or more taxa types in the ‘most wanted’ category, indicating that these stream segments are among Connecticut’s healthiest streams.

Table 1: Summary of Results, 2016-2023

Category 2016 2017 2018 2019 2020 2021 2022 2023
# RBV Samples Submitted 70 78 55 118 47 80 66 59
# Monitoring Stations 61 74 45 102 41 73 59 55
# Streams Monitored 55 61 43 89 36 65 52 53
# Samples w/ 4+ "Most Wanted" Types 21 43 23 62 16 52 28 30
% of Samples w/ 4+ "Most Wanted" Types 30% 55% 42% 53% 34% 65% 43% 51%


Above: volunteers receiving training at Salmon Brook, East Granby. Photo courtesy of the Farmington River Watershed Association.

2023 Results Map

This interactive map depicts the number of ‘Most Wanted’ macroinvertebrate types present in RBV voucher samples from only 2023 samples. Mouse over the site icon to see the monitoring ID, waterbody name, and count of most wanted taxa.

Sites are assessed to be ‘healthy’ () if 4 or more ‘most wanted’ macroinvertebrate taxa were present. View the full Volunteer Monitoring Mapping Application to see the results from all 25 years of monitoring.

Table 2: Most Wanted Counts by Site

This table provides a list of most wanted counts by site. The table is sorted according to waterbody name, site ID, and then the date the sample was collected.

A detailed list of all monitoring sites, most wanted counts and the complete RBV taxa list for each can be downloaded from the Water Quality Portal.

Waterbody Name Station ID Date Collected Most Wanted Count
Baker Brook 18821 10/29/2023 0
Barbour Brook 16379 10/8/2023 1
Barrows Brook 15594 10/28/2023 3
Beaver Brook 15680 9/20/2023 5
Big Brook 17992 9/6/2023 2
Blackledge River 19455 10/17/2023 3
Brothers Brook 20888 11/9/2023 0
Burlington Fish Hatchery 14608 10/14/2023 2
Burnham Brook 20492 5/5/2023 2
Burnham Brook 20882 11/3/2023 4
Carmel Hill Brook 20486 9/17/2023 4
Cedar Pond Brook 15501 10/27/2023 2
Conantville Brook 20877 11/15/2023 4
Cooks Pond outlet; unnamed brook 20878 10/23/2023 0
Cranberry Meadow Brook 20375 10/31/2023 3
East Meadow Brook 18993 9/16/2023 3
Elbow Brook 20881 10/1/2023 5
English Neighborhood Brook 17867 11/12/2023 7
Fawn Brook 18409 10/17/2023 4
Flat Brook 16121 9/16/2023 4
Fourmile River 17322 10/24/2023 2
Fraser Brook 18961 4/28/2023 4
Fraser Brook 20884 11/3/2023 2
Greenwich Creek 20889 11/28/2023 0
Harris Brook 15313 4/28/2023 4
Harris Brook 19214 4/28/2023 6
Harris Brook 19214 10/27/2023 3
Harris Brook 20883 11/3/2023 4
Hedge Brook 20126 5/5/2023 3
Hedge Brook 20126 11/3/2023 2
Indian Meadow Brook 14842 10/16/2023 8
Latimer Brook 18413 10/24/2023 2
Latimer Brook 18495 10/24/2023 3
Little Dam Tavern Brook 20876 11/16/2023 4
Moodus River 18871 11/12/2023 4
Moosehorn Brook 16861 10/31/2023 3
Morgan Brook 20887 9/17/2023 5
Muddy Brook 18694 5/5/2023 4
NNT to Bunnell Brook 20666 10/4/2023 5
NNT to East Branch Eightmile River 19215 4/28/2023 3
NNT to East Branch Eightmile River 19215 10/27/2023 3
NNT to Eightmile at Pleasant Valley Preserve 15314 5/5/2023 2
NNT to Eightmile at Pleasant Valley Preserve 15314 10/27/2023 2
NNT to Farmington River 20885 9/19/2023 5
NNT to Salmon River 20373 9/9/2023 4
NNT to Shepaug River 18922 9/25/2023 2
Peake Road 17650 10/26/2023 7
Peckham Brook 17731 10/16/2023 5
Pine Brook 14396 10/18/2023 4
Railroad Brook 16995 10/28/2023 4
Raymond Brook 16999 10/29/2023 5
Reichenback Brook 20154 9/16/2023 3
Rickenback Brook 20371 10/28/2023 1
Safford Brook 20880 11/17/2023 10
Salmon Brook 14435 9/2/2023 4
Salmon River 17022 9/9/2023 4
Scranton Brook 20879 11/30/2023 9
Thompson Brook 20886 10/26/2023 2
Wood Creek 17333 9/16/2023 8



Interpreting Your Results

Refer to Table 3 for guidance on how to interpret your monitoring results.

Table 3: Interpretation of RBV Results by Most Wanted Count

# ‘Most Wanted’ Taxa What Does it Tell Us?
4+ Excellent!! Lots of very sensitive macroinvertebrate types were present – you found a healthy stream segment!

This is a very clear signal of excellent water quality as the ‘Most Wanted’ types cannot survive in degraded streams or otherwise low water quality conditions.

DEEP Assessment Decision: The stream containing the monitoring location will be considered for ‘Fully Supporting’ State aquatic life use standards. Fully supporting streams or stream segments will be listed in the next Integrated Water Quality Report (IWQR) and added to the DEEP’s running list of miles of Healthy Waters assessed.

Recommended Volunteer Follow-Up Action: Revisit every 2 to 5 years to continue documenting the excellent health of this stream.
3 A Very Good Sign – Keep this Site on Your Radar!

Three Most Wanted or very sensitive macroinvertebrate types in a sample is a strong signal of good to excellent water quality. Although three most wanted is not statistically enough data for DEEP to list the site as a healthy stream segment this time, this is a great find!

DEEP Assessment Decision: No Assessment Made… but consider trying again!

Recommended Volunteer Follow-Up Action: If this was the first time the site was monitored with RBV, this site should be a high priority candidate for next season.
0-2 Double check whether this is a good spot to be using the RBV method…

More information is needed to determine the water quality at this site. Reasons for few most wanted could include poor water quality; however, few most wanted types should not be interpreted as a proof of degraded conditions. Other factors such as unusual flow conditions and lack of adequate habitat can also result in few most wanted types despite overall good water quality.

DEEP Assessment Decision: No Assessment Made

Recommended Volunteer Follow-Up Action: Discuss with the State RBV Coordinator whether you should revisit this site in future monitoring seasons.

2023 RBV Data Impact

The 2023 RBV results will be consolidated into the 2026 Integrated Water Quality Report. A ‘healthy’ river or stream is one that fully supports a variety of uses, including aquatic life use.

In 2023, RBV volunteers monitored 53 waterbodies in Connecticut. Based on the results reported in the previous section, RBV data is likely to generate 9 new listings of Connecticut waterbodies that fully support aquatic life use:

  1. NNT to Bunnell Brook (Burlington)

  2. NNT to Farmington Rivern (Barkhamsted)

  3. Fraser Brook (Salem)

  4. NNT to Salmon River (East Hampton)

  5. Conantville Brook (Mansfield)

  6. Scranton Brook (Union)

  7. Safford Brook (Woodstock)

  8. Peake Brook (Woodstock)

  9. Little Dam Tavern Brook (Putnam)


Appendix A: 2023 RBV Monitoring Station Description & Details

Station ID Waterbody Name Municipality Description Latitude Longitude
14396 Pine Brook HADDAM at old bridge Pine Brook Road 41.50790 -72.49520
14435 Salmon Brook EAST GRANBY adjacent Granbrook Park 41.93660 -72.77490
14608 Burlington Fish Hatchery BURLINGTON at hatchery 41.76890 -72.95420
14842 Indian Meadow Brook WINCHESTER between Route 44 crossing and end of Loomis Street 41.93050 -73.07900
15313 Harris Brook SALEM at Mouth (within Walden Preserve) 41.47330 -72.28510
15314 Eightmile River, Unnamed tributary to ("PV Brook") LYME at trail crossing off MacIntosh Road (Pleasant Valley Preserve) 41.41550 -72.33960
15314 Eightmile River, Unnamed tributary to ("PV Brook") LYME at trail crossing off MacIntosh Road (Pleasant Valley Preserve) 41.41550 -72.33960
15501 Cedar Pond Brook LYME DS Beaver Brook Road, near #134 41.41190 -72.31280
15594 Barrows Brook VERNON upstream Confluence with Tankerhoosen 41.84020 -72.43650
15680 Beaver Brook BARKHAMSTED upstream Beaver Brook Road in State Forest 41.95130 -72.99580
16121 Flat Brook EAST HAMPTON at Route 16 (at mouth) 41.55440 -72.45230
16379 Barbour Brook CANTON upstream Barbourtown road 41.86060 -72.91320
16861 Moosehorn Brook GRANBY at Moosehorn Road 41.97486 -72.87221
16995 Railroad Brook VERNON US tankerhoosen river DS Bread and Milk Road 41.82772 -72.44828
16999 Raymond Brook HEBRON DS Grayville Rd 41.61280 -72.36810
17022 Salmon River COLCHESTER US of bigelow brook in salmon river SF 41.54832 -72.45162
17322 Fourmile River EAST LYME at spring rock road 41.33900 -72.25920
17333 Wood Creek BETHLEHEM at Route 132 41.62750 -73.22570
17650 Peake Brook WOODSTOCK at Butts Road Crossing 41.92526 -71.94692
17731 Peckham Brook WOODSTOCK access behind #100 paine district road 41.97708 -71.96291
17867 English Neighborhood Brook WOODSTOCK PARALLEL TO LYONS RD, 100M BELOW POND 41.99800 -72.02010
17992 Big Brook SALEM UPSTREAM OF RTE 85 41.50446 -72.28783
18409 Fawn Brook MARLBOROUGH Downstream Old Hartford Road/S. Main Street (at mouth) 41.60458 -72.41875
18413 Latimer Brook EAST LYME 50m Upstream Colony Road 41.38397 -72.21429
18495 Latimer Brook EAST LYME US Route 1, behind Flanders Plaza 41.36726 -72.20808
18694 Muddy Brook EAST HADDAM US 100m of Hopyard Rd. 41.47597 -72.34292
18821 Baker Brook (East branch headwaters) BOLTON Downstream School Road 41.74794 -72.42410
18871 Moodus River EAST HADDAM 25m US of Gristmill Rd Crossing 41.50859 -72.44826
18922 Shepaug River, Unnamed Tributary to WASHINGTON 100 m US mouth 41.62301 -73.32809
18961 Fraser Brook SALEM at Salem Community Park 41.48108 -72.25275
18993 East Meadow Brook WOODBURY at Scratchville Road (Strong Preserve) 41.55509 -73.19706
19214 Harris Brook SALEM 0.25 mi upstream Music Vale Rd 41.48739 -72.27044
19214 Harris Brook SALEM 0.25 mi upstream Music Vale Rd 41.48739 -72.27044
19215 East Branch Eightmile River, Unnamed tributary to ("Ransom Brook") SALEM 30m downstream Darling Rd ("Bingham Property") 41.45494 -72.28356
19215 East Branch Eightmile River, Unnamed tributary to ("Ransom Brook") SALEM 30m downstream Darling Rd ("Bingham Property") 41.45494 -72.28356
19455 Blackledge River MARLBOROUGH 30m upstreamFawn Brook, near Kellogg Rd/South Main St 41.60413 -72.41969
20126 Hedge Brook EAST HADDAM At West Dolbia Hill Road 41.45207 -72.33766
20126 Hedge Brook EAST HADDAM At West Dolbia Hill Road 41.45207 -72.33766
20154 Reichenback Brook WOODBURY at Mill Road 41.57585 -73.17105
20371 Rickenback Brook VERNON 50m either side of Belding WMA yellow trail bridge 41.83361 -72.44306
20373 Salmon River, Unnamed tributary to EAST HAMPTON 100 ft. upstream of Salmon River confluence 41.54838 -72.45101
20375 Cranberry Meadow Brook EAST LYME Within Nehantic State Forest, off Grassy Hill Rd (100 yds. southwest of pasture) 41.41490 -72.24536
20486 Carmel Hill Brook WOODBURY Within Marzahl Refuge, upstream of walking bridge (Near Carmel Hill Rd/Weekeepeee Rd. intersection) 41.59224 -73.23900
20492 Burnham Brook EAST HADDAM Adjacent trail within Burnam Brook Preserve 41.46530 -72.32450
20666 Bunnell Brook, Unnamed tributary to Burlington Behind Lewis Mill High School and Hal-Bur Middle School, 500m upstream Upson Road 41.78036 -72.98366
20876 Little Dam Tavern Brook PUTNAM 100ft US Route 44 behind CVS parking lot 41.92473 -71.87576
20877 Conantville Brook MANSFIELD 300ft DS Meadowbrook Ln adjacent to Sunny Acres Park 41.73302 -72.21193
20878 Cooks Pond outlet; unnamed brook ("Cooktown Pond outlet") PRESTON 150ft DS Cook Town Road 41.49733 -71.97479
20879 Scranton Brook UNION 150ft US Scranton Road in Yale Myers Forest 41.98181 -72.16480
20880 Safford Brook WOODSTOCK 150ft DS Smith Road 41.95030 -72.03423
20881 Elbow Brook EAST HAMPTON Approx. 200m US of Salmon River 41.51939 -72.48238
20882 Burnham Brook EAST HADDAM Located on Burnham Brook Preserve about 80ft from Blue trail 41.46596 -72.32125
20883 Harris Brook SALEM Stream located at bridge near Red Trail - break off near field 41.47259 -72.28619
20884 Fraser Brook SALEM 10ft before bridge to 30ft below bridge 41.47778 -72.25444
20885 NNT to Farmington River BARKHAMSTED 30m downstream of Legion Road Bridge; American Legion State Forest 41.93972 -73.00972
20886 Thompson Brook AVON Old Farms Rd. intersection with Thompson Rd; Avon Old Farms property 41.77329 -72.84018
20887 Morgan Brook BARKHAMSTED Just upstream of bridge crossing Rt 318 41.90860 -73.00068
20888 Brothers Brook GREENWICH Southern end of Pomerance Park; along the Red trail 41.04792 -73.60081
20889 Greenwich Creek GREENWICH Located in the Greenwich Country Club golf course 41.05418 -73.61020

Appendix B: Most Wanted Taxa by Site

This table provides a list of all the “most wanted” taxa found at each site. The table is sorted according to waterbody name, site ID, and then the date the sample was collected. A full list of all taxa found at each site can be downloaded from the Water Quality Portal.

Waterbody Name Station ID Date Collected Family Final ID
Barbour Brook 16379 10/8/2023 Perlidae Acroneuria
Barrow’s Brook 15594 10/28/2023 Brachycentridae Adicrophleps hitchcocki
Barrow’s Brook 15594 10/28/2023 Peltoperlidae Tallaperla
Barrow’s Brook 15594 10/28/2023 Rhyacophilidae Rhyacophila fuscula
Beaver Brook 15680 9/20/2023 Chloroperlidae Sweltsa
Beaver Brook 15680 9/20/2023 Peltoperlidae Tallaperla
Beaver Brook 15680 9/20/2023 Perlidae Acroneuria
Beaver Brook 15680 9/20/2023 Pteronarcyidae Pteronarcys biloba
Beaver Brook 15680 9/20/2023 Glossosomatidae Glossosoma
Big Brook 17992 9/6/2023 Rhyacophilidae Rhyacophila
Big Brook 17992 9/6/2023 Perlidae Acroneuria abnormis
Bigelow Brook 20373 9/9/2023 Chloroperlidae Sweltsa
Bigelow Brook 20373 9/9/2023 Perlidae Eccoptura xanthenes
Bigelow Brook 20373 9/9/2023 Rhyacophilidae Rhyacophila fuscula
Bigelow Brook 20373 9/9/2023 Peltoperlidae Tallaperla
Blackledge River 19455 10/17/2023 Isonychiidae Isonychia
Blackledge River 19455 10/17/2023 Perlidae Acroneuria abnormis
Blackledge River 19455 10/17/2023 Glossosomatidae Glossosoma
Bradley Brook 14608 10/14/2023 Rhyacophilidae Rhyacophila fuscula
Bradley Brook 14608 10/14/2023 Perlodidae Isoperla
Burnham Brook 20492 5/5/2023 Perlodidae Isoperla
Burnham Brook 20492 5/5/2023 Rhyacophilidae Rhyacophila carolina
Burnham Brook 20882 11/3/2023 Perlidae Perlidae
Burnham Brook 20882 11/3/2023 Peltoperlidae Tallaperla
Burnham Brook 20882 11/3/2023 Taeniopterygidae Taeniopteryx
Burnham Brook 20882 11/3/2023 Perlodidae Perlodidae
Carmel Hill Brook 20486 9/17/2023 Peltoperlidae Tallaperla
Carmel Hill Brook 20486 9/17/2023 Perlidae Eccoptura xanthenes
Carmel Hill Brook 20486 9/17/2023 Rhyacophilidae Rhyacophila carolina
Carmel Hill Brook 20486 9/17/2023 Isonychiidae Isonychia
Cedar Brook 15501 10/27/2023 Capniidae Capniidae
Cedar Brook 15501 10/27/2023 Perlidae Acroneuria abnormis
Conantville Brook 20877 11/15/2023 Taeniopterygidae Taeniopteryx
Conantville Brook 20877 11/15/2023 Glossosomatidae Glossosoma
Conantville Brook 20877 11/15/2023 Rhyacophilidae Rhyacophila fuscula
Conantville Brook 20877 11/15/2023 Capniidae Capniidae
Cranberry Meadow Brook 20375 10/31/2023 Perlidae Perlidae
Cranberry Meadow Brook 20375 10/31/2023 Peltoperlidae Tallaperla
Cranberry Meadow Brook 20375 10/31/2023 Leuctridae Leuctra
East Meadow Brook 18993 9/16/2023 Isonychiidae Isonychia
East Meadow Brook 18993 9/16/2023 Glossosomatidae Glossosomatidae
East Meadow Brook 18993 9/16/2023 Perlidae Acroneuria
Elbow Brook 20881 10/1/2023 Perlidae Acroneuria
Elbow Brook 20881 10/1/2023 Peltoperlidae Tallaperla
Elbow Brook 20881 10/1/2023 Rhyacophilidae Rhyacophila
Elbow Brook 20881 10/1/2023 Apataniidae Apatania
Elbow Brook 20881 10/1/2023 Glossosomatidae Glossosoma
English Neighborhood Brook 17867 11/12/2023 Isonychiidae Isonychia
English Neighborhood Brook 17867 11/12/2023 Taeniopterygidae Taeniopteryx
English Neighborhood Brook 17867 11/12/2023 Glossosomatidae Glossosomatidae
English Neighborhood Brook 17867 11/12/2023 Rhyacophilidae Rhyacophila fuscula
English Neighborhood Brook 17867 11/12/2023 Peltoperlidae Tallaperla
English Neighborhood Brook 17867 11/12/2023 Apataniidae Apatania
English Neighborhood Brook 17867 11/12/2023 Capniidae Capniidae
Fawn Brook 18409 10/17/2023 Glossosomatidae Glossosoma
Fawn Brook 18409 10/17/2023 Isonychiidae Isonychia
Fawn Brook 18409 10/17/2023 Perlidae Acroneuria abnormis
Fawn Brook 18409 10/17/2023 Chloroperlidae Chloroperlidae
Flat Brook 16121 9/16/2023 Chloroperlidae Sweltsa
Flat Brook 16121 9/16/2023 Brachycentridae Brachycentrus appalachia
Flat Brook 16121 9/16/2023 Isonychiidae Isonychia
Flat Brook 16121 9/16/2023 Perlidae Acroneuria abnormis
Fourmile River 17322 10/24/2023 Brachycentridae Brachycentrus numerosus
Fourmile River 17322 10/24/2023 Perlidae Acroneuria
Fraser Brook 18961 4/28/2023 Perlidae Acroneuria abnormis
Fraser Brook 18961 4/28/2023 Heptageniidae Epeorus
Fraser Brook 18961 4/28/2023 Rhyacophilidae Rhyacophila fuscula
Fraser Brook 18961 4/28/2023 Chloroperlidae Sweltsa
Fraser Brook 20884 11/3/2023 Perlidae Acroneuria abnormis
Fraser Brook 20884 11/3/2023 Peltoperlidae Tallaperla
Harris Brook 15313 4/28/2023 Isonychiidae Isonychia
Harris Brook 15313 4/28/2023 Perlidae Acroneuria abnormis
Harris Brook 15313 4/28/2023 Rhyacophilidae Rhyacophila fuscula
Harris Brook 15313 4/28/2023 Glossosomatidae Agapetus
Harris Brook 19214 4/28/2023 Rhyacophilidae Rhyacophila fuscula
Harris Brook 19214 4/28/2023 Ephemerellidae Drunella
Harris Brook 19214 4/28/2023 Perlidae Acroneuria abnormis
Harris Brook 19214 4/28/2023 Brachycentridae Micrasema
Harris Brook 19214 4/28/2023 Isonychiidae Isonychia
Harris Brook 19214 4/28/2023 Glossosomatidae Agapetus
Harris Brook 19214 10/27/2023 Peltoperlidae Tallaperla
Harris Brook 19214 10/27/2023 Perlidae Paragnetina media
Harris Brook 19214 10/27/2023 Isonychiidae Isonychia
Harris Brook 20883 11/3/2023 Perlidae Paragnetina media
Harris Brook 20883 11/3/2023 Capniidae Capniidae
Harris Brook 20883 11/3/2023 Glossosomatidae Glossosoma
Harris Brook 20883 11/3/2023 Isonychiidae Isonychia
Hedge Brook 20126 5/5/2023 Rhyacophilidae Rhyacophila carolina
Hedge Brook 20126 5/5/2023 Perlodidae Isoperla
Hedge Brook 20126 5/5/2023 Nemouridae Amphinemura
Hedge Brook 20126 11/3/2023 Peltoperlidae Tallaperla
Hedge Brook 20126 11/3/2023 Perlidae Eccoptura xanthenes
Indian Meadow Brook 14842 10/16/2023 Rhyacophilidae Rhyacophila fuscula
Indian Meadow Brook 14842 10/16/2023 Chloroperlidae Sweltsa
Indian Meadow Brook 14842 10/16/2023 Isonychiidae Isonychia
Indian Meadow Brook 14842 10/16/2023 Glossosomatidae Glossosoma
Indian Meadow Brook 14842 10/16/2023 Perlidae Acroneuria
Indian Meadow Brook 14842 10/16/2023 Heptageniidae Epeorus
Indian Meadow Brook 14842 10/16/2023 Peltoperlidae Tallaperla
Indian Meadow Brook 14842 10/16/2023 Taeniopterygidae Taeniopteryx
Latimer Brook 18413 10/24/2023 Brachycentridae Brachycentrus numerosus
Latimer Brook 18413 10/24/2023 Perlidae Acroneuria
Latimer Brook 18495 10/24/2023 Glossosomatidae Glossosoma
Latimer Brook 18495 10/24/2023 Brachycentridae Brachycentrus numerosus
Latimer Brook 18495 10/24/2023 Perlidae Acroneuria
Little Dam Tavern Brook 20876 11/16/2023 Apataniidae Apatania
Little Dam Tavern Brook 20876 11/16/2023 Brachycentridae Micrasema
Little Dam Tavern Brook 20876 11/16/2023 Perlidae Eccoptura xanthenes
Little Dam Tavern Brook 20876 11/16/2023 Taeniopterygidae Taeniopteryx
Moodus River 18871 11/12/2023 Perlidae Acroneuria abnormis
Moodus River 18871 11/12/2023 Taeniopterygidae Taeniopteryx
Moodus River 18871 11/12/2023 Capniidae Capniidae
Moodus River 18871 11/12/2023 Rhyacophilidae Rhyacophila fuscula
Moosehorn Brook 16861 10/31/2023 Perlidae Acroneuria
Moosehorn Brook 16861 10/31/2023 Rhyacophilidae Rhyacophila acutiloba
Moosehorn Brook 16861 10/31/2023 Pteronarcyidae Pteronarcys
Morgan Brook 20887 9/17/2023 Chloroperlidae Sweltsa
Morgan Brook 20887 9/17/2023 Pteronarcyidae Pteronarcys biloba
Morgan Brook 20887 9/17/2023 Rhyacophilidae Rhyacophila
Morgan Brook 20887 9/17/2023 Isonychiidae Isonychia
Morgan Brook 20887 9/17/2023 Perlidae Paragnetina
Muddy Brook 18694 5/5/2023 Rhyacophilidae Rhyacophila fuscula
Muddy Brook 18694 5/5/2023 Peltoperlidae Tallaperla
Muddy Brook 18694 5/5/2023 Heptageniidae Epeorus
Muddy Brook 18694 5/5/2023 Perlidae Acroneuria abnormis
NNT to Bunnell Brook 20666 10/4/2023 Perlidae Perlidae
NNT to Bunnell Brook 20666 10/4/2023 Leuctridae Leuctra
NNT to Bunnell Brook 20666 10/4/2023 Chloroperlidae Sweltsa
NNT to Bunnell Brook 20666 10/4/2023 Rhyacophilidae Rhyacophila
NNT to Bunnell Brook 20666 10/4/2023 Peltoperlidae Tallaperla
NNT to Eightmile at Pleasant Valley Preserve 15314 5/5/2023 Rhyacophilidae Rhyacophila
NNT to Eightmile at Pleasant Valley Preserve 15314 5/5/2023 Perlodidae Isoperla
NNT to Eightmile at Pleasant Valley Preserve 15314 10/27/2023 Peltoperlidae Tallaperla
NNT to Eightmile at Pleasant Valley Preserve 15314 10/27/2023 Perlidae Perlidae
NNT to Farmington River 20885 9/19/2023 Brachycentridae Adicrophleps hitchcocki
NNT to Farmington River 20885 9/19/2023 Chloroperlidae Sweltsa
NNT to Farmington River 20885 9/19/2023 Perlodidae Perlodidae
NNT to Farmington River 20885 9/19/2023 Peltoperlidae Tallaperla
NNT to Farmington River 20885 9/19/2023 Rhyacophilidae Rhyacophila
NNT to Shepaug River 18922 9/25/2023 Glossosomatidae Glossosoma
NNT to Shepaug River 18922 9/25/2023 Peltoperlidae Tallaperla
Peake Brook 17650 10/26/2023 Glossosomatidae Glossosoma
Peake Brook 17650 10/26/2023 Brachycentridae Brachycentrus numerosus
Peake Brook 17650 10/26/2023 Perlidae Eccoptura xanthenes
Peake Brook 17650 10/26/2023 Peltoperlidae Tallaperla
Peake Brook 17650 10/26/2023 Rhyacophilidae Rhyacophila
Peake Brook 17650 10/26/2023 Apataniidae Apatania
Peake Brook 17650 10/26/2023 Capniidae Capniidae
Peckham Brook 17731 10/16/2023 Capniidae Paracapnia
Peckham Brook 17731 10/16/2023 Perlidae Eccoptura xanthenes
Peckham Brook 17731 10/16/2023 Peltoperlidae Tallaperla
Peckham Brook 17731 10/16/2023 Glossosomatidae Glossosoma
Peckham Brook 17731 10/16/2023 Rhyacophilidae Rhyacophila carolina
Pine Brook 14396 10/18/2023 Chloroperlidae Sweltsa
Pine Brook 14396 10/18/2023 Glossosomatidae Glossosoma
Pine Brook 14396 10/18/2023 Capniidae Capniidae
Pine Brook 14396 10/18/2023 Perlidae Acroneuria abnormis
Railroad Brook 16995 10/28/2023 Glossosomatidae Glossosoma
Railroad Brook 16995 10/28/2023 Perlidae Acroneuria abnormis
Railroad Brook 16995 10/28/2023 Capniidae Capniidae
Railroad Brook 16995 10/28/2023 Rhyacophilidae Rhyacophila fuscula
Ransom Brook 19215 4/28/2023 Perlodidae Isoperla
Ransom Brook 19215 4/28/2023 Perlidae Paragnetina media
Ransom Brook 19215 4/28/2023 Rhyacophilidae Rhyacophila fuscula
Ransom Brook 19215 10/27/2023 Perlidae Paragnetina media
Ransom Brook 19215 10/27/2023 Brachycentridae Brachycentrus numerosus
Ransom Brook 19215 10/27/2023 Peltoperlidae Tallaperla
Raymond Brook 16999 10/29/2023 Taeniopterygidae Taeniopteryx
Raymond Brook 16999 10/29/2023 Perlidae Paragnetina media
Raymond Brook 16999 10/29/2023 Brachycentridae Micrasema
Raymond Brook 16999 10/29/2023 Glossosomatidae Glossosoma
Raymond Brook 16999 10/29/2023 Isonychiidae Isonychia
Reichenbach Brook 20154 9/16/2023 Rhyacophilidae Rhyacophila
Reichenbach Brook 20154 9/16/2023 Glossosomatidae Glossosomatidae
Reichenbach Brook 20154 9/16/2023 Perlidae Acroneuria
Rickenback Brook 20371 10/28/2023 Perlidae Eccoptura xanthenes
Safford Brook 20880 11/17/2023 Taeniopterygidae Taeniopteryx
Safford Brook 20880 11/17/2023 Glossosomatidae Glossosoma
Safford Brook 20880 11/17/2023 Perlidae Eccoptura xanthenes
Safford Brook 20880 11/17/2023 Apataniidae Apatania
Safford Brook 20880 11/17/2023 Lepidostomatidae Lepidostoma
Safford Brook 20880 11/17/2023 Heptageniidae Epeorus
Safford Brook 20880 11/17/2023 Perlodidae Perlodidae
Safford Brook 20880 11/17/2023 Chloroperlidae Sweltsa
Safford Brook 20880 11/17/2023 Capniidae Capniidae
Safford Brook 20880 11/17/2023 Peltoperlidae Tallaperla
Salmon Brook 14435 9/2/2023 Brachycentridae Brachycentrus numerosus
Salmon Brook 14435 9/2/2023 Perlidae Acroneuria abnormis
Salmon Brook 14435 9/2/2023 Glossosomatidae Glossosoma
Salmon Brook 14435 9/2/2023 Isonychiidae Isonychia
Salmon River 17022 9/9/2023 Heptageniidae Epeorus
Salmon River 17022 9/9/2023 Isonychiidae Isonychia
Salmon River 17022 9/9/2023 Glossosomatidae Glossosoma
Salmon River 17022 9/9/2023 Perlidae Acroneuria abnormis
Scranton Brook 20879 11/30/2023 Perlidae Eccoptura xanthenes
Scranton Brook 20879 11/30/2023 Peltoperlidae Tallaperla
Scranton Brook 20879 11/30/2023 Leuctridae Leuctridae
Scranton Brook 20879 11/30/2023 Lepidostomatidae Lepidostoma
Scranton Brook 20879 11/30/2023 Nemouridae Nemouridae
Scranton Brook 20879 11/30/2023 Taeniopterygidae Taeniopterygidae
Scranton Brook 20879 11/30/2023 Chloroperlidae Sweltsa
Scranton Brook 20879 11/30/2023 Rhyacophilidae Rhyacophila carolina
Scranton Brook 20879 11/30/2023 Glossosomatidae Glossosomatidae
Thompson Brook 20886 10/26/2023 Perlidae Acroneuria
Thompson Brook 20886 10/26/2023 Rhyacophilidae Rhyacophila fuscula
Wood Creek 17333 9/16/2023 Perlodidae Perlodidae
Wood Creek 17333 9/16/2023 Chloroperlidae Sweltsa
Wood Creek 17333 9/16/2023 Rhyacophilidae Rhyacophila fuscula
Wood Creek 17333 9/16/2023 Heptageniidae Epeorus
Wood Creek 17333 9/16/2023 Perlidae Acroneuria
Wood Creek 17333 9/16/2023 Pteronarcyidae Pteronarcys biloba
Wood Creek 17333 9/16/2023 Peltoperlidae Tallaperla
Wood Creek 17333 9/16/2023 Isonychiidae Isonychia